Experiencing a no-start condition or hearing a click with no ignition response? Your Mercedes Electronic Steering Lock (ESL) may have failed—a common issue that prevents the vehicle from recognizing the key and enabling ignition.

We provide professional ESL repair, replacement, and programming services using dealer-level tools to restore proper communication between the steering lock, EIS, and key system. Our process ensures the vehicle starts and operates as intended without the need for costly dealership replacements.

This is a convenient mail-in service, send in your ESL (and EIS if required), and we’ll handle testing, repair, and synchronization for a reliable fix.

Service Details

Service Type
ESL Repair, Replacement, and Programming

Common Symptoms

• No crank / no start

• Key turns but ignition does not activate

• Steering lock not engaging or releasing

• Clicking noise from steering column

Compatible Vehicles
Mercedes-Benz models with ESL systems

What to Send
ESL (Steering Lock)
EIS (may be required depending on issue)
Key(s) (if applicable for testing)

Turnaround Time
Typically 1–3 business days after receiving unit

Need a spare key for your Mercedes? We provide professional key programming for European vehicles using dealer-level tools, ensuring full functionality including push-to-start and remote features.

This service is ideal for customers looking to avoid dealership pricing while still receiving reliable, properly programmed keys. Whether you’ve lost a key or just want a backup, we make the process simple and straightforward.

We offer both mobile service and mail-in options depending on your vehicle and situation. Each key is programmed specifically to your vehicle to ensure proper communication with all systems.

Service Details

Service Type
Spare Key Programming

Vehicle Compatibility
Mercedes-Benz (most models with smart/proximity keys)

What’s Included
Key programming and synchronization to vehicle

Options Available
Mobile service or mail-in (EIS required for some models)

Starting Price
$99 (mobile service fee, key cost additional)

Specialized remote key, transponder, and immobilizer programming for classic flip-blade and RF Mercedes keys:

• Flip Key Programming: Full transponder and remote generation for early IR and RF systems

• All-Keys-Lost Recovery: Direct EEPROM and bench chip reading for lost key scenarios

• Remote Syncing: RF central locking remote synchronization

• Supported Vehicles: SLK (R170), SL (R129), S-Class (W140), G-Class (W461), ML (W163), A-Class (W168), Sprinter (W901–W906), and Chrysler Crossfire

Mercedes FBS2 / Early Transponder Bench Programming

For bench programming Mercedes FBS2, FBS2a, FBS2b, and early transponder systems, the required components vary depending on the chassis and immobilizer architecture.

Vehicle and Module Requirements

SLK Class R170 / Chrysler Crossfire
Immobilizer System: DAS / Immobilizer Box
Location: Behind instrument cluster
Required Module: DAS / Immobilizer Module

ML Class W163
Immobilizer System: AAM / EAM
Location: Under dash / fuse box area
Required Modules:
Early vehicles: AAM, All Activity Module
Later vehicles: EAM plus DAS Module

SL Class R129 / S Class W140
Immobilizer System: IFZ / DAS Control Module
Location: Under dash / footwell area
Required Module: DAS / IFZ Module

G Class W461 / A Class W168
Immobilizer System: Transponder Box / Immobilizer
Required Module: DAS / Immobilizer Module

Sprinter W901, W902, W903, W904, W905 / T1N
Immobilizer System: WSP, Wegfahrsperre
Location: Behind instrument cluster
Required Module: WSP Immobilizer Box

Sprinter W906 / NCV3
Immobilizer System: EIS / EZS Electronic Ignition Switch
Required Module: EIS / EZS Switch Unit

Standard Mail In Checklist for Customers

Target Immobilizer / DAS Module
Send the vehicle specific security module required for your application. Depending on the vehicle, this may be the AAM, EAM, DAS, WSP, IFZ, EIS, or EZS.

Existing Working Key, If Available
Include an existing working key when having an additional or spare key made. The existing key may also assist with verifying vehicle and key information.

Mechanical Key Blade or Lock, If Key Cutting Is Requested
If the service includes cutting a mechanical or emergency key blade, send an existing key blade or the appropriate door or ignition lock when required. Common Mercedes profiles on these systems may include HU39, HU64, and YM15 depending on application.

Vehicle Information
Include:

Year
Make
Model
VIN

Customer Information
Include:

Full Name
Phone Number
Email Address
Return Shipping Address

Supported Mercedes Benz Systems

DAS2 Infrared Smart Key Systems (1995 to 1997)

Supported Chassis

• W140 S Class

• R129 SL

• W202 C Class

• W210 E Class

Common Models

• S320

• S420

• S500

• S600

• SL320

• SL500

• SL600

• C220

• C230

• C280

• E300

• E320

• E420

Mail In Requirements

Send:

• Electronic Ignition Switch (EIS)

• Engine Control Module (ECU)

If you would like your emergency key blade cut:

• Include one working mechanical key or

• One door lock cylinder

If neither is included, your new key will be shipped with an uncut emergency blade.

Early DAS3 / FBS3 Systems (1998 to 2005)

Supported Chassis

• W163 ML

• W168 A Class

• W170 SLK

• W202 C Class

• W203 C Class

• W208 CLK

• W209 CLK

• W210 E Class

• W211 E Class

• W215 CL

• W220 S Class

• R230 SL

• W463 G Class

• Sprinter

• Vito

Common Models

• C230

• C240

• C280

• C320

• C350

• C32 AMG

• C43 AMG

• C55 AMG

• CLK320

• CLK350

• CLK430

• CLK500

• CLK55 AMG

• CLK63 AMG

• E320

• E350

• E430

• E500

• E550

• E55 AMG

• E63 AMG

• ML320

• ML350

• ML430

• ML500

• ML55 AMG

• S430

• S500

• S600

• S55 AMG

• S65 AMG

• CL500

• CL600

• CL55 AMG

• CL65 AMG

• G500

• G55 AMG

• SL500

• SL550

• SL55 AMG

• SL600

• SL65 AMG

• SLK230

• SLK320

• SLK32 AMG

Mail In Requirements

Send:

• Electronic Ignition Switch (EIS)

• Engine Control Module (ECU)

If you would like your emergency key blade cut:

• Include one working mechanical key or

• One door lock cylinder

If neither is included, your new key will be shipped with an uncut emergency blade.

Late FBS3 Systems (2006 to 2014)

Supported Chassis

• W204 C Class

• W207 E Coupe

• W212 E Class

• W216 CL

• W221 S Class

• W218 CLS

• X204 GLK

• W164 ML

• W166 ML

• X164 GL

• X166 GL

• R171 SLK

• R172 SLK

• W251 R Class

• W463 G Class

• C117 CLA (Early Models)

• Sprinter

• Vito

• Metris

Common Models

• C250

• C300

• C350

• C63 AMG

• E350

• E550

• E63 AMG

• S350

• S400

• S450

• S550

• S600

• S63 AMG

• S65 AMG

• CLS550

• CLS63 AMG

• GLK350

• ML320 CDI

• ML350

• ML550

• ML63 AMG

• GL320 CDI

• GL450

• GL550

• GL63 AMG

• G500

• G550

• G55 AMG

• G63 AMG

• SLK250

• SLK280

• SLK300

• SLK350

• SLK55 AMG

• R350

• R500

• R550

• R63 AMG

• CLA250

Mail In Requirements

Send:

• Electronic Ignition Switch (EIS)

• Engine Control Module (ECU)

If the Electronic Steering Lock (ESL) has failed:

• Include the ESL for repair, personalization, or emulator programming.

If you would like your emergency key blade cut:

• Include one working mechanical key or

• One door lock cylinder

If neither is included, your new key will be shipped with an uncut emergency blade.

Services Included

• Dealer level Mercedes Smart Key generation

• All Keys Lost recovery

• EIS programming

• Immobilizer synchronization

• ECU synchronization

• Infrared Smart Key programming

• EEPROM reading and programming

• EEPROM repair

• Password extraction

• ECU virginization where supported

• ESL personalization

• ESL emulator programming

• Bench programming

• Plug and play programming

Optional Services

• Additional Smart Keys

• Mechanical key cutting

• ESL repair

• ESL emulator programming

• ECU virginization

• Used ECU adaptation

• Used EIS personalization

• VGS transmission programming

• Conductor Plate programming

• EEPROM repair and recovery

Important Information

Buyer is responsible for confirming compatibility with their specific vehicle before purchasing.

All modules should be packaged securely to prevent shipping damage.

Programming begins after all required modules have been received and inspected.

Turnaround time begins once all required components have arrived.

No returns on programmed electronic components. Programming services are non refundable once completed.

This service supports DAS2 and FBS3 Mercedes Benz immobilizer systems only. FBS4 vehicles are not supported.

Restore proper shifting and transmission performance with our professional Mercedes TCU (Transmission Control Unit / Conductor Plate) service. Common issues such as being stuck in gear, harsh shifting, limp mode, or communication faults are often caused by a failing conductor plate or internal TCU issues.

We provide testing, repair, replacement, and programming using dealer-level tools to ensure the TCU is correctly matched and coded to your vehicle. Our process eliminates guesswork and prevents unnecessary part replacement, delivering a reliable and cost-effective solution compared to dealership repairs.

This is a convenient mail-in service—send in your unit, and we’ll handle the rest with fast turnaround times and clear communication.

Service Details

Service Type
TCU / Conductor Plate Repair, Replacement, and Programming

Common Symptoms

• Stuck in one gear (limp mode)

• Harsh or delayed shifting

• Transmission will not shift

• Communication faults with transmission module

Compatible Vehicles
Mercedes-Benz models with conductor plate / integrated TCU systems

What to Send
Transmission Control Unit / Conductor Plate

Turnaround Time
Typically 1–3 business days after receiving unit

Restore functionality to your Mercedes with our professional EIS (Electronic Ignition Switch) service. Whether you’re dealing with a no-start condition, key not turning, or complete EIS failure, we provide reliable solutions using dealer-level tools and proven processes.

This service is designed for both repair shops and vehicle owners looking for a cost-effective alternative to dealership replacement. We handle testing, repair, replacement, and programming to ensure your EIS communicates properly with the vehicle and keys.

Mail-in service makes the process simple, send in your EIS, and we’ll handle the rest. Fast turnaround times and clear communication ensure you get back up and running without unnecessary delays.

Service Details

Service Type
Mail-in EIS Testing / Repair / Replacement / Programming

Compatible Vehicles
Mercedes-Benz models with EIS systems

Turnaround Time
Typically 1–3 business days after receiving unit

What to Send
EIS (Electronic Ignition Switch)
Key(s) (if applicable for testing/programming)